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Corona DS-939MG digital metal-gear micro servo
What are the dimensions of the Corona DS-939MG digital metal-gear micro servo? · Modern device · basis: Secondary source: ServoDatabase.com (copy of the maker's figures; the maker publishes none directly)
Also called: ds-939mg dimensions, corona ds939mg size, ds939mg mm, corona 939 servo, ds-939mg spline, ds-939mg torque, ds939mg medidas, ds939mg abmessungen
Exact dimensions. True size, with no printing tolerance added.
- length
- 22.5 mm
- width
- 11.51 mm
- height
- 24.61 mm
Notes
- Servo Database listing in inches (secondary), converted to mm.
- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.
- Secondary source: the numbers come from a retailer or magazine copy of the maker's specification.
Corona DS-939MG digital metal-gear micro servo size chart
| dimension | value |
|---|---|
| Length | 0.886 in (22.5 mm) |
| Width | 0.453 in (11.51 mm) |
| Height | 0.969 in (24.61 mm) |
| Weight | 0.44 oz |
| Torque | 34.73 oz-in at 4.8 V; 37.51 oz-in at 6.0 V |
| Speed | 0.14 s/60° at 4.8 V; 0.13 at 6.0 V |
| Gears | metal |
| Spline | 21T |
| Bearing | single |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| ServoDatabase.com | Corona DS-939MG | web | Publisher's page; dimensions are facts |
Free files
★ Free files 1 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| corona-ds-939mg-servo-envelope | Envelope 22.5 × 11.51 × 24.61 mm (Servo case L × W × H exactly as the maker lists it; the listing does not say whether mounting tabs or the output shaft are included) | STEP · STL |
https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.Plain text: sheet.txt · JSON: /api/geometry?object=corona-ds-939mg-servo
Fits with


Questions
What spline does the DS-939MG use?
21T.